Does Preview Mode For Tunings Stay When Changing Pickup Position?

Major question I have for the JTV. If it does, that would mean you could basically use preview mode as a temporary alt tuning mechanism, which is great.

If I ever upgrade I think the alt tuning knob would be a major +, since I use a vast amount of tunings and don't like wasting banks on the model knob for alternate tunings of duplicate guitars, but am forced to have to without the tuning knob feature.

If you mean Virtual Capo, then yes you can do it any time and you can overwriting any of the Alt Tuning slots, The alternative tuning is independent from the model selection (except for the one called "Model" which uses the tuning on the Model and "Standard" which doesn't do any pitch shifting).

You could keep the predefined Alt Tunings that you use and overwrite the others with the most commonly used tunings you use not already covered, and you would only need to go into the preview mode for the rarely used alternative tunings